title: Understanding controlled trials. Why are randomised controlled trials important?
authors.affiliation: National Primary Care Research and Development Centre, University of Manchester.
authors.forename: B
authors.initials: B
authors.lastname: Sibbald
authors.forename: M
authors.initials: M
authors.lastname: Roland
mesh_terms: D004992:Ethics, Medical; D016032:Randomized Controlled Trials as Topic / Q000592:standards*